# (Partially) Generated by Django 4.0.2 on 2022-02-04 18:01

from django.db import migrations, models
import django.db.models.deletion


def migrate_certification_version_forward(apps, schema_editor):
    db_alias = schema_editor.connection.alias

    Certification = apps.get_model("paperwork", "Certification")
    CertificationVersion = apps.get_model("paperwork", "CertificationVersion")

    for certification in Certification.objects.using(db_alias).all():
        (version, _) = CertificationVersion.objects.using(db_alias).get_or_create(
            definition=certification.certification, version=certification.version
        )
        certification.certification_version = version
        certification.save()


class Migration(migrations.Migration):

    dependencies = [
        ('membershipworks', '0001_initial'),
        ('paperwork', '0001_initial'),
    ]

    operations = [
        migrations.CreateModel(
            name='CertificationVersion',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('version', models.CharField(blank=True, db_column='Version', max_length=255, null=True)),
                ('definition', models.ForeignKey(db_column='Certification', on_delete=django.db.models.deletion.PROTECT, to='paperwork.certificationdefinition')),
            ],
        ),
        migrations.AddConstraint(
            model_name='certificationversion',
            constraint=models.UniqueConstraint(fields=('definition', 'version'), name='unique_certification_version'),
        ),
        migrations.AddField(
            model_name='certification',
            name='certification_version',
            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='paperwork.certificationversion', null=True),
        ),
        migrations.RunPython(migrate_certification_version_forward),
        migrations.AlterField(
            model_name='certification',
            name='certification_version',
            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='paperwork.certificationversion'),
        ),
        migrations.RemoveField(
            model_name='certification',
            name='certification',
        ),
        migrations.RemoveField(
            model_name='certification',
            name='version',
        ),
    ]